LOCATION.-- Lat 42°04'55", long 87°53'25" (NAD of 1927), in SE1/4SE1/4 sec.25, T.42 N., R.11 E., Cook County, Hydrologic Unit 07120004, on right bank 50 ft upstream from Dam No. 2 of Cook County Forest Preserve, 0.3 mi downstream from Lake Avenue Bridge, 1.2 mi upstream from Central Road Bridge, 2.5 mi north of Des Plaines, and at mile 69.3. |
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DRAINAGE AREA.-- 360 mi2. |
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PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE |
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DISCHARGE: October 1940 to current year. |
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STAGE: Water years 1994 to current year. |
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SURFACE-WATER QUALITY |
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CHEMICAL: Water years 1978-91. |
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REVISED RECORDS.-- WSP 975: 1942. WDR IL-75-1: Drainage area. |
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GAGE.-- Water-stage recorder, phone telemeter, and masonry dam. Datum of gage is 626.31 ft above NGVD of 1929. Prior to Apr. 8, 1941, nonrecording gage at same site and datum. |
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EXTREMES FOR PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Maximum discharge, 4,900 ft3/s, Oct. 1, 1986, gage height, 10.88 ft; no flow many days in 1944, 1946 and Aug. 7, 8, 1962. |
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EXTREMES OUTSIDE PERIOD OF RECORD.-- |
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SURFACE-WATER DISCHARGE AND STAGE: Flood of July 4, 1938, reached a stage of 9.0 ft, from floodmark, discharge, 5,000 ft3/s. |
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REMARKS FOR CURRENT YEAR.-- Records good except those for estimated daily discharges, which are poor. |
Discharge, cubic feet per second, WATER YEAR OCTOBER 2003 TO SEPTEMBER 2004 DAILY MEAN VALUES |
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DAY | OCT | NOV | DEC | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP |
1 | 62 | 80 | 183 | 246 | e82 | 631 | 1040 | 346 | 2790 | 562 | 68 | 112 |
2 | 57 | 239 | 187 | 236 | e82 | 604 | 879 | 319 | 2250 | 500 | 67 | 95 |
3 | 88 | 739 | 169 | 233 | e83 | 604 | 800 | 293 | 1830 | 497 | 84 | 83 |
4 | 93 | 701 | 158 | 226 | e83 | 636 | 742 | 268 | 1470 | 791 | 340 | 72 |
5 | 75 | 878 | 220 | 234 | e84 | 1350 | 693 | 244 | 1160 | 666 | 213 | 67 |
6 | 69 | 708 | 244 | 186 | e86 | 1640 | 647 | 210 | 884 | 620 | 142 | 63 |
7 | 69 | 526 | 222 | 152 | e90 | 1520 | 602 | 184 | 756 | 614 | 120 | 63 |
8 | 64 | 422 | 206 | 217 | e94 | 1290 | 554 | 173 | 674 | 615 | 102 | 59 |
9 | 63 | 346 | 215 | 179 | e97 | 1050 | 502 | 169 | 602 | 634 | 87 | 51 |
10 | 61 | 274 | 700 | 164 | e98 | 921 | 445 | 196 | 669 | 786 | 79 | 55 |
11 | 62 | 219 | 911 | 158 | 96 | 855 | 386 | 239 | 1240 | 775 | 70 | 50 |
12 | 59 | 182 | 817 | 162 | 93 | 804 | 336 | 273 | 1430 | 698 | 67 | 52 |
13 | 67 | 146 | 717 | 165 | 92 | 769 | 301 | 445 | 1330 | 624 | 64 | 56 |
14 | 233 | 131 | 656 | 163 | 90 | 741 | 281 | 636 | 1290 | 530 | 59 | 57 |
15 | 235 | 121 | 608 | 156 | 88 | 704 | 260 | 766 | 1150 | 424 | 55 | 58 |
16 | 128 | 114 | 580 | 146 | 87 | 665 | 241 | 750 | 946 | 298 | 57 | 75 |
17 | 84 | 111 | 547 | 152 | 88 | 624 | 259 | 718 | 839 | 215 | 66 | 78 |
18 | 73 | 474 | 508 | 155 | 86 | 579 | 278 | 1140 | 779 | 173 | 87 | 73 |
19 | 69 | 665 | 473 | 135 | 96 | 535 | 268 | 1660 | 725 | 155 | 70 | 70 |
20 | 70 | 505 | 422 | e120 | 175 | 490 | 278 | 1660 | 669 | 133 | 70 | 72 |
21 | 69 | 405 | 358 | e100 | 269 | 436 | 365 | 1880 | 683 | 124 | 60 | 66 |
22 | 71 | 354 | 327 | e92 | 290 | 395 | 420 | 2300 | 778 | 130 | 56 | 49 |
23 | 69 | 347 | 319 | e86 | 360 | 364 | 409 | 2680 | 745 | 190 | 56 | 43 |
24 | 67 | 399 | 293 | e84 | 466 | 400 | 394 | 2830 | 716 | 140 | 70 | 50 |
25 | 94 | 349 | 261 | e88 | 482 | 462 | 463 | 3180 | 714 | 121 | 73 | 53 |
26 | 93 | 300 | 226 | e88 | 486 | 618 | 451 | 3610 | 714 | 108 | 70 | 55 |
27 | 86 | 265 | 216 | e87 | 483 | 791 | 413 | 3740 | 705 | 100 | 75 | 68 |
28 | 81 | 229 | e250 | e86 | 480 | 851 | 380 | 3470 | 685 | 86 | 287 | 65 |
29 | 77 | 203 | 276 | e84 | 493 | 1530 | 365 | 2920 | 652 | 82 | 237 | 64 |
30 | 77 | 187 | 268 | e82 | --- | 1590 | 351 | 2610 | 618 | 75 | 168 | 62 |
31 | 79 | --- | 261 | e80 | --- | 1320 | --- | 3080 | --- | 71 | 136 | --- |
TOTAL | 2644 | 10619 | 11798 | 4542 | 5679 | 25769 | 13803 | 42989 | 30493 | 11537 | 3255 | 1936 |
MEAN | 85.3 | 354 | 381 | 147 | 196 | 831 | 460 | 1387 | 1016 | 372 | 105 | 64.5 |
MAX | 235 | 878 | 911 | 246 | 493 | 1640 | 1040 | 3740 | 2790 | 791 | 340 | 112 |
MIN | 57 | 80 | 158 | 80 | 82 | 364 | 241 | 169 | 602 | 71 | 55 | 43 |
CFSM | 0.24 | 0.98 | 1.06 | 0.41 | 0.54 | 2.31 | 1.28 | 3.85 | 2.82 | 1.03 | 0.29 | 0.18 |
IN. | 0.27 | 1.10 | 1.22 | 0.47 | 0.59 | 2.66 | 1.43 | 4.44 | 3.15 | 1.19 | 0.34 | 0.20 |
e Estimated |
STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1941 - 2004, BY WATER YEAR (WY) | ||||||||||||
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MEAN | 157 | 215 | 230 | 233 | 318 | 621 | 629 | 436 | 311 | 179 | 133 | 135 |
MAX | 1453 | 1187 | 1368 | 1046 | 1070 | 2216 | 1990 | 1557 | 1299 | 908 | 726 | 1191 |
(WY) | 1987 | 1986 | 1983 | 1960 | 1974 | 1979 | 1993 | 1996 | 2000 | 1993 | 1972 | 1972 |
MIN | 0.96 | 3.02 | 2.73 | 2.92 | 5.01 | 40.7 | 57.7 | 41.5 | 15.3 | 6.35 | 0.81 | 0.30 |
(WY) | 1945 | 1954 | 1945 | 1945 | 1963 | 1945 | 1945 | 1946 | 1963 | 1946 | 1944 | 1944 |
SUMMARY STATISTICS | FOR 2003 CALENDAR YEAR | FOR 2004 WATER YEAR | WATER YEARS 1941 - 2004 | |||
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ANNUAL TOTAL | 84792 | 165064 | ||||
ANNUAL MEAN | 232 | 451 | 299 | |||
HIGHEST ANNUAL MEAN | 656 | 1993 | ||||
LOWEST ANNUAL MEAN | 31.4 | 1963 | ||||
HIGHEST DAILY MEAN | 1560 | May 11 | 3740 | May 27 | 4870 | Oct 1 1986 |
LOWEST DAILY MEAN | 46 A | Feb 24 | 43 | Sep 23 | 0.00 | B |
ANNUAL SEVEN-DAY MINIMUM | 47 | Feb 21 | 54 | Sep 9 | 0.00 | Aug 10 1944 |
MAXIMUM PEAK FLOW | 3760 | May 27 | 4900 | Oct 1 1986 | ||
MAXIMUM PEAK STAGE | 8.51 | May 27 | 10.88 | Oct 1 1986 | ||
INSTANTANEOUS LOW FLOW | 38 | Sep 23 | ||||
ANNUAL RUNOFF (CFSM) | 0.645 | 1.25 | 0.832 | |||
ANNUAL RUNOFF (INCHES) | 8.76 | 17.06 | 11.30 | |||
10 PERCENT EXCEEDS | 506 | 892 | 776 | |||
50 PERCENT EXCEEDS | 155 | 240 | 139 | |||
90 PERCENT EXCEEDS | 54 | 67 | 12 |
Table of Contents |
Introduction |
Station Descriptions |
Surface-Water Data |
Ground-Water Data |
Meteorological Data |
Biological Data |